Home / 12,402.19-17,115.16-6,813.19

Finding the Fourth Proportional to 12,402.19, 17,115.16 and 6,813.19

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Solution

The fourth proportional to 12,402.19, 17,115.16 and 6,813.19 is: 9,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.19 : 17,115.16 = 6,813.19 : x
  2. Step 2: Convert to fraction form
    12,402.19/17,115.16 = 6,813.19/x
  3. Step 3: Cross multiply
    12,402.19x = 17,115.16 × 6,813.19
  4. Step 4: Simplify right side
    12,402.19x = 116,608,777.14
  5. Step 5: Solve for x
    x = 116,608,777.14/12,402.19
  6. Step 6: Final answer
    x = 9,402.27

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.